Home / 12,529.36-18,784.32-5,135.68

Finding the Fourth Proportional to 12,529.36, 18,784.32 and 5,135.68

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Solution

The fourth proportional to 12,529.36, 18,784.32 and 5,135.68 is: 7,699.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,529.36 : 18,784.32 = 5,135.68 : x
  2. Step 2: Convert to fraction form
    12,529.36/18,784.32 = 5,135.68/x
  3. Step 3: Cross multiply
    12,529.36x = 18,784.32 × 5,135.68
  4. Step 4: Simplify right side
    12,529.36x = 96,470,256.54
  5. Step 5: Solve for x
    x = 96,470,256.54/12,529.36
  6. Step 6: Final answer
    x = 7,699.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.